failure (memory allocation failure): raise a MemoryError exception

PyObject_IsInstance() failure

Original patch by Vajrasky Kok, further improved (I hope) by me.

Some third-party projects, such as matplotlib and PIL/Pillow,
depended on being able to build with Tcl and Tk frameworks in
/Library/Frameworks.  They were unable to build with the built-in
Tcl/Tk and/or execute correctly.

Patch by Serhiy Storchaka and Vajrasky Kok.

Issue #10197: Indicate availability of subprocess.get[status]output on Windows and add a note about the effects of universal newlines

Initial patch by Vajrasky Kok.

Patch by Vajrasky Kok.

Issue #10197 Rework subprocess.get[status]output to use subprocess functionality and thus to work on Windows. Patch by Nick Coghlan.

integers instead of a string.  Based on patch by Guilherme Polo.

Issue #19286: Adding test demonstrating the failure when a directory is found in the package_data globs.